2 /* MTD-based superblock management
11 #include <linux/mtd/super.h>
23  * - they are if the underlying MTD device is the same
27 	struct mtd_info *mtd = fc->sget_key;  in mtd_test_super()  local
31 			 mtd->index, mtd->name);  in mtd_test_super()
36 		 sb->s_mtd->index, sb->s_mtd->name, mtd->index, mtd->name);  in mtd_test_super()
41  * mark the superblock by the MTD device it is using
42  * - set the device number to be the correct MTD block device for pesuperstence
54  * get a superblock on an MTD-backed filesystem
57 		      struct mtd_info *mtd,  in mtd_get_sb()  argument
64 	fc->sget_key = mtd;  in mtd_get_sb()
72 			 mtd->index, mtd->name);  in mtd_get_sb()
73 		put_mtd_device(mtd);  in mtd_get_sb()
77 			 mtd->index, mtd->name);  in mtd_get_sb()
96  * get a superblock on an MTD-backed filesystem by MTD device number
102 	struct mtd_info *mtd;  in mtd_get_sb_by_nr()  local
104 	mtd = get_mtd_device(NULL, mtdnr);  in mtd_get_sb_by_nr()
105 	if (IS_ERR(mtd)) {  in mtd_get_sb_by_nr()
107 		return PTR_ERR(mtd);  in mtd_get_sb_by_nr()
110 	return mtd_get_sb(fc, mtd, fill_super);  in mtd_get_sb_by_nr()
114  * get_tree_mtd - Get a superblock based on a single MTD device
134 	 * CONFIG_BLOCK=n - we specify the underlying MTD device by number or  in get_tree_mtd()
142 			struct mtd_info *mtd;  in get_tree_mtd()  local
144 			/* mount by MTD device name */  in get_tree_mtd()
145 			pr_debug("MTDSB: mtd:%%s, name \"%s\"\n",  in get_tree_mtd()
148 			mtd = get_mtd_device_nm(fc->source + 4);  in get_tree_mtd()
149 			if (!IS_ERR(mtd))  in get_tree_mtd()
150 				return mtd_get_sb(fc, mtd, fill_super);  in get_tree_mtd()
152 			errorf(fc, "MTD: MTD device with name \"%s\" not found",  in get_tree_mtd()
156 			/* mount by MTD device number name */  in get_tree_mtd()
162 				pr_debug("MTDSB: mtd%%d, mtdnr %d\n", mtdnr);  in get_tree_mtd()
175 		errorf(fc, "MTD: Couldn't look up '%s': %d", fc->source, ret);  in get_tree_mtd()
190 		errorf(fc, "MTD: Attempt to mount non-MTD device \"%s\"",  in get_tree_mtd()
197  * destroy an MTD-based superblock